Drink mixer



.wl I UxMoRE Oct. 22, 1935.

DRINK MIXER Filed oct. 29, 1932 5 Sheets-Sheet l Oct. 22, 1935. w. LUXMORE mgml DRINK MIXER l Filed Oct. 29, 1952 3 Sheets-Sheet 2 W. LUXMORE Oct. 22, 1935.

DRINK MIXER- Filed 001;. 29, 1952 5 Sheets-Sheet 5 "a k'Z/a'mlazzm /lwmvyhwyw NHwHHHI lig Patented Oct. 22, 1935 UNITED STATES PATENT OFFICE DRINK MIXER William Luxmore, Chicago, Ill., assignor of onehalf to Albert G. McCaleb, Evanston, Ill.

This invention relates to a drink mixer in which a motor driven stirrer is provided for the purpose of agitating the ingredients of a drink to blend same together.

One of the objects of the present invention is to provide an improved drink mixer.

A further object of the invention is to provide a mixer in which the duration of the stirring or agitation is automatically controlled and terminated.

A further object of the invention is to provide a mixer of this type in which the duration of the stirring or agitation can be readily controlled.

A further object of the invention is to provide a drink mixer of this type in which the time control is adapted to be set by the placing of the cup upon the mixer.

A further object of the invention is to provide a timed mixer adapted to be put in operation by the mounting of the cup upon the mixer.

Other objects, advantages and capabilities of the invention will appear from the following description of a preferred embodiment thereof, taken in conjunction with the accompanying drawings, in which Figure 1 is a side elevation of the mixer with the cup applied thereto, the cup and part of the mixer being shown in section;

Fig. 2 is a fragmentary Vertical section of the mixer column, shown on a larger scale, the section being taken on the line 2-2 of Fig. 3;

Fig. 3 is a similar view, the line of section being taken on the line 3-3 of Fig. 2;

Fig. 4 is a fragmentary front elevation'of the mixer column showing the elements thereof which engage the cup;

Fig. 5 is a cross-sectional view, on a larger scale, and taken on the line 5-5 of Fig. 3;

Fig. 6 is a detail View partly in section, take on the line 6-6 of Fig. 3;

Fig. 7 is a wiring diagram of the mixer;

Fig. 8 is a sectional detail view taken on the line 8-8 of Fig. 5, and

Fig. 9 is a sectional View taken on the line 9-9 of Fig. 2. Y

Referring to the drawings, the mixer comprises a stand or support I0 which rigidly carries a motor II. The stand I0 may comprise a casting I2 which is hollow and is flared atits lower end to provide a suitable base. The mixer may stand on a plurality of feet I3 of rubber or other suitable material. The upper part of the casing I2 is in the form of a hollow column I4 which slopes rearwardly slightly in order to bring the motor motor II is mounted. The gooseneck I5 is se- 5 cured rigidly to the column I4 by means of screws l5 or their equivalent. As shown in Fig. 1, the gooseneck I5 may be provided with a shoulder Il which rests on the upper end of the column I4. As best shown at I8 in Fig. 1, the front por- 10 tion of the base of the casing I2 is hollowed so as to facilitate the introduction of the cup I9 into cooperative relation with the stirrer element 20 carried by the stirrer shaft 2l which is connected to the armature of the motor. The man- 15 ner in which the cup is maintained in this position will hereinafter be described.

The interior of the casing I2 is provided with a boss 22 upon which is mounted a pair of spring arms 23 which carry at their outer ends contact 20 points 24. The spring arms 23 are mounted on the boss 22 with the aid of suitable insulating members so as to insulate them from each other and from the casing I2. The resiliency of the arms 23 causes them to tend to diverge so as to- 25 maintain the contacts 24 out of contact with each other. One of the arms 23 is connected to a conductor 25 of a cable 25 which is adapted to be plugged into a suitable power outlet. The other conductor 2l of the cable 26 passes up 30 through the column I4 and the gooseneck I5 and is connected to one of the terminals 28 of the motor II. The other terminal of the motor II .is connected by a conductor 29 to a plate 33 and the other resilient arm 23 is connected by a con- 35 ductor 3| to a similar plate 32.

The plates 30 and 32 are mounted on either side of a vertical bar 33 of insulating material and preferably at the upper part thereof as shown in Fig. 6. The plates 36 and 32 are preferably 40 flush with surfaces of the bar 33 which extends therebelow. The plates 30 and 32 may suitably be secured to the bar 33 by means of screws and the conductors 29 and 3l may extend upwardly through vertical openings in the bar 33 and then 45 through short horizontal openings intocontact with the plates 30 and 32, to which they may be soldered or otherwise secured in a manner to insure effective electric contact. At its lo-wer end the plate 32 carries an outwardly directed 50 projection 34, the purpose of which will hereinafter be described.

The bar 33 is provided on each side with flanges 35 which are adapted to bear upon the inside Wall of the column I4 on either side of a slot 36 55 the slot 36.

provided therein. This slot extends longitudinally oi the column I4 and is of suitable length to provide adjustment of the bar 33 suiiicient to j give theydesired range oi timing. The bar 33 carries an elongated portion 31 which ts into This elongated portion 31 is drilled and tapped to receive the threaded stem of a knurled nut 38. The outer face of the column |4V somewhat, the bar 33 may be moved longitudinaly ly into any desired position within its range of adjustment and that itV maybe securely maintained in such adjusted position by merely tightening the nut 38;

Adjacent its inner face the sides of the bar 33 kare recessed to provide Va T vguide which is adapted to cooperate with a ,Trslot 40x-in a bar 4|, enabling the bar 4| to slide along the bar 33. The bar 4| carries on its face opposite to the T slot 49, a rackv 42 which is adapted to cooperate with a pinion 43 which will hereinafter be referred'to. Y'The bar 4| may suitably be` of insulating material, the upper end of which is rigidly connected, by a joint 44 to a rod 45 which rod extends upwardly and is provided at its upper end with a head 45, The bar 4| provides a mounting for contacts 41; and 48 which are connected together and which are adapted to bear upon the plates 38 `and 32 respectively. The contacts 4'|.and 48 may suitably be formed from a piece' .of resilient wire, the outer ends of which are adapted to bear upon the plates 38 and 32. These ends are connectedby lengths 49, both of which are connected to a coil springy portion 58. The coil 50 is adapted to be received in a slot 5| in the bar 4| at the upper end of the rack 42 `A bolt 52 extends through the coil 58 and, being tightened up against the Yfaces of the bar 4|,

' holds the coil 58 against removal. `The side faces able to move past the projection with a sharpV lick, insuring quick break of themotor circuit. Pinion 43 i'sslidably mounted upon a shaft 55 carried by a frame 58 mounted on the inside of the column 4 opposite the slot 3B. The hub of the pinion 43 carries ratchetftee'th'Sl which are adapted to engage corresponding ratchet teeth on the hubof a gear wheel 58. Aspring 59 forces Y .the pinion 43 towards the gear Wheel 58 -so as Y f ever,Y the bar 4|l is elevated the ratchet teeth permit the pinion' 43 to rotate in the opposite direction without communicating movementtoV the gear wheel 58. The gearwheel 58 forms'one of'a train'which terminates in an Yescapement wheel Y68. VThe escapement lwheel 60 is adapted toY cooperate with a pallet lever 6| which actuates a balance wheel 62 in well known manner. It will be understood that when the bar 4| and. associated parts are allowed to fall, the escapement mechanism begins to operate and impedes the descent of these elements and causes them to descend at a predetermined speed. VThe position of the plates 38 and 32 can be controlled by actuation of the knurled nut 38 so as to give stirring or agitating periods ci desired length. When the nut 38 is in a low position the stirring period is relatively long. In the uppermost posi- "tion of the nut 38, the duration oi stirring is relatively short. intermediate positions give periods 01' stirring of intermediate length.

The cup |9 is supported in operative position by the' engagement of its base with a stud 63 and the'engagement of the lip of the cup by a clip 64 which extends into the cup slightly. The stud 63 is supported by a lever 35 which extends throughv an opening in the front of the goose-` neck |5 and'is pivotally mounted upon a pin 68 mounted'in said gooseneck. Rearwardly of the stud 63 the lever 65 carries a stud 6l, which may suitably be of insulating material, which stud extends inwardly through an opening in the wall of the column I4 into the interior thereof so as to engage the proximate resilient arm 23 and bring the points 24 into contact when the cup I9 is mounted in operative position. When the cup is removed the resilience ofthe arms 23 is suliicient to move the lever 65 outwardly and disconnect the points 24. The clip 34 projects from the outer face of a tubular carriageV 68 which is adapted to slide upon the upper portion of the:

lever 35. The lever is shouldered as shown at 69, in order to limit the downward movement of ythe carriage 68. Ther carriage 68 comprises a head i8 which projects inwardly into the column I4 through a slot 'il at the upper end thereof. The head 'I8 carries a rearwardly projecting pin t2 which.. serves as a pivot'fkor crossed arms 13, the lower ends of which arel provided with sloping faces which divergeoutwardly and are adapted to be spread by coming intozcontact with the4 head 48' of the rod 45.- -V This head is provided with downwardly directed shoulders, and the arms I3 are provided with complementary hook elements which are adapted to engage said shoulders.

The upper ends of the arms i3 are providedn` with 4sloping upwardly divergent faces which are adapted to engage a downward projection 14 oi the lever 65 'when the carriage 68 is moved up- Y wardly so as to spread the ends of the arms 'I3 apart. VA..spring 15 is provided having: ends!v is connected tothe rear end of the pinVV 12 andV Y to a stud '11; mounted at a low point withinthe column-i4,` and tends to move the carriage 68V downwardly when the absence of the cup I9 permits.

parts. Y

The operation of thedevice is as follows. In the non-operating'state of the mixer, the sliding ing located near the bottom of the slot The A pin V'18, projecting inwardly within .theV column |4,.serves as a stop limiting the downv ward movement of the bar 4| and associated esY points 24 areout of contact andthe lever 6,5 is

in a position-'somewhat outward of that shown 35 and 32. The arms 'I3 are at their'lowest position and the hooked lower ends are in engagement with the head 46 of the rod 45.

The timing is set for the desired duration of stirring or agitation, this being effected by loosening the knurled nut 38 and sliding it upwardly or downwardly, as the case may be. This adjustment determines the location of the bar 33 and in particular it determines the position of the lower edges of the plates 3D and-32 which, in turn, determines the point at which the motor circuit is broken. The ingredients of the drink are placed in the cup I9 and the cup is then placed in position, that is the cup is moved under the stirrer 2G and is slipped upwardly towards the position of the cup shown in Fig. l. The edge of the cup is slipped under the clip 64 and the upward movement of the cup raises the carriage 68 into the position shown in Fig. 1. The upward movement of the carriage 68 carries with it the crossed arms 'F3 and consequently, the bar 4l. During the upward movement of the bar 4|, the pinion 43 rotates freely with respect to the gear wheel 58, the engaging ratchets slipping over one another during movement in this direction. When the cup is allowed to rest on the stud 63 the lever 65 is moved inwardly towards the column I4 and the points 24 are brought into contact. The motor circuit is now complete through conductor 25, arms 23, conductor 3l, plate 32, contacts 48 and 47, plate 35, conductor 29 and conductor 21 so that the motor starts operating, actuating the stirrer 2! in the usual manner. During the last part of the upward movement of the carriage 88, the upper ends of the arms I3 come into contact with the depending portion 'i4 of the lever 65 which has the effect of spreading the arms 13 and allowing the bar 4l and associated parts to slide downwardly at a slow rate which is controlled by the balance wheel 62. During this downward movement, the contacts 41 and 48 are drawn over the surfaces of the plates 30 and 32. The plate 3Q projects somewhat lower than the plate 32 and the first break is made between the contact 48 and the latter plate. When the contact 48 approaches the lower end of the plate 32 it engages the projection 34 and is held thereby for a short time while the downward movement of the bar 4i continues.

When the arm 49 carrying the contact 48 is iiexed suficiently, the slot 54 in the side of the bar 4| providing for this flexure, the contact 48 suddenly passes away from the projection 34 and the circuit is immediately broken. The breaking of the circuit causes the motor to stop.

When the cup is removed the carriage G8 slides downwardly on the lever 65 until the lower ends of the arms T3 come into contact with the head it of the rod 45. The weight of the carriage and the tension of the spring s6 are suflicient to cause the arms to open to permit the lower hooked ends to engage the head #35. The device is now returned to initial non-operating condition and it may be started again by inserting the same or another cup in the manner described above.

Although the invention has been disclosed in connection with the specific details of a preferred embodiment thereof, it must be understood that such details are not intended to be limitative of the invention except in so far as set forth in the accompanying claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A drink mixer comprising a standard, an electric motor mounted on the standard, a depending agitator driven by the motor, a cup support on the standard for retaining the cup around the agitator when manipulated into such position, time-keeping mechanism carried by the standard, circuit 'controlling devices actuated by the time-keeping mechanism to open the motor circuit following a predetermined time interval after the time-keeping mechanism is placed in 10 operation, a member which is engaged by the cup, when the latter is being manipulated into position around the agitator, for placing the timekeeping mechanism in operation, and additional circuit controlling devices for insuring that the motor circuit is not completed until after the deposit of the cup on its support.

2. A drink mixer comprising a standard, an electric motor mounted on the standard, a depending agitator driven by the motor,ra cup support on the standard for retaining the cup around the agitator and against movement relative to the standard when the cup is manipulated into such position around the agitator, time-keeping mechanism carried by the standard, circuit controlling devices actuated by the time-keeping mechanism to open the motor circuit following a predetermined time interval after the time-keeping mechanism isplaced in operation, and a member which is engaged by the cup, when the. latter is being manipulated into position around the agitator, for placing the time-keeping mechanism in operation, said time-keeping mechanism comprising a weight, vertically movable with respect to r the standard, said weight being lifted to an ele- 3U vated position by manipulation of the cup into position around the agitator, and devices for regulating the descent rate of such weight.

3. A drink mixer comprising a standard, an electric motor mounted on the standard, a depending agitator driven by the motor, a cup support o-n the standard for retaining a cup around the agitator when manipulated into that position, time-keeping mechanism carried by the standard, circuit controlling devices actuated by the timekeeping mechanism to open the motor circuit fcllowing a predetermined time interval after the time-keeping mechanism is placed in operation, and a member which is engaged by the cup, when the latter is being manipulated into position around the agitator, for placing the time-keeping mechanism in operation, said time-keeping mechanism comprising a Weight vertically movable with respect to the standard, said weight being lifted to an elevated position by manipulation of the cup into position around the agitator, and devices for regulating the descent rate of said weight, said last mentioned devices comprising a rack carried by the weight, a pinion meshing with said rack, said pinion being journalled on means fixed with respect to the standard, and escapement devices for determining the rate at which the teeth of the pinion may engage the teeth of the rack during the descent of said weight.

4. A drink mixer comprising a standard, a motor carried by the standard, an agitator driven by the motor and supported fro-m above, a cup for manual manipulation from beneath the agitator into a position around said agitator, instrurncntalities carried by the standard forengaging and 0 supporting the cup in said position around the agitator and against vertical movement relative to either agitator or standard during the mixing operation, means for closing the motor circuit when the cup has been manipulated into said position 'around Vthe agitator, time-keeping mechanism carried by the standard, circuit controlling de,- vices actuated'by said time-keeping mechanism to open the motor circuit at the end of a predeter- 5 mined time interval following initiation ofthe operation of said time-keeping mechanism, and a member, engaged and actuated by the cup While the latter is being manipulated into position around the agitator, for initiating the operation of the time-keeping mechanism. 1

5. VA drink mixer comprising a stationary support, a motor carried by said support, a depending agitator driven by the motor and supported from above, a cup adapted to be manipulated from beneath the agitator into a position around said agitator, means carried by the support adapted stationarily to retain the cup in said position around the agitator, circuit controlling means arranged to close the motor circuit when the cup has been manipulated into said position around the agitator, a Weight vertically movable with respect to said support, a Weight lifting member arranged and adapted to be engaged and actuated `by the cup to lift said weight Whilethe cup is being manipulated into the aforesaid position around the agitator, means for releasing the Weight from its lifting member when the cup has been manipulated into position around the agitator, means for regulating the descent rate of said Weight, and contacts controlled by said Weight for opening the motor circuit at a predetermined point in the descent of said weight.

Y 6. A drink mixer comprising a standard, a motor carried by the standard, an agitator driven '35 by the motor and supported from above, a Vcup for manipulation from beneatnrthe agitator into Va position around the agitator, devices carried by the standard' for stationarily supporting the cup around the agitator, circuit controlling de 40 vices for closing the motor circuit when'the cup is supported injits aioresaid position around kthe agitator, time-keeping mechanism associated with the standard comprising a Weight adapted to rise and tall relatively to said standard, escapement mechanism controlling Vthe falling rate of said weight, means engaged by the cup for lifting said Weight as the cup is manipulated into its position around the agitator, means for releasing the weight from its lifting means when the cup has been placedinto position around the agitator, and circuit controlling devices actuated by said `Vweight and adapted to open the motor circuit at a predetermined point in the descent of said weight. Y

7; A drink mixer com rising a standard, a motor carried by the standard, anagitator driven by the motor and supported from `above,-a cup for manipulation from beneath the agitator into *a positionaround tno agitator, devices carried G0V bythe standard for stationarily supporting the cup around Ythe agitator, circuit controlling devices for closing the motor circuit Vwhen'the cup is supported in its aforesaid position around' the agitator, Vtime-keeping mechanism associated Y "said weight as Vthe cup ismanipulated into its 70 position around Vthe agitator, means for releasing the weight from its 'lifting means when the cup has been placed into'position around the agitator, cooperating contact means carriedV by the weight Vand the standard7 said cooperating contact means 'tor is operating, s'aidcon'tact means being adapted to separate to open the lmotor circuit 'at a predetermined point in the-descent of said Weight,

land means for varying the height of the standard carrying one of said'cooperating contact means'15 to vary the operating period of the mixer.

8. A drink mixer-comprising aV standard, a motor carried-by the standard, an agitator driven bythe motor and supported fromabove, -a -cup for manipulation from beneath the agitator into a position around the agitator, means carried by the standard for stationarily supporting the'cup around the agitator, circuit controlling devices for closing the motor circuit when the cup-is supported in its aforesaid position around the 15 agitator, time-keeping mechanism associated with said standard arranged and adapted to open the vmotor circuit at the end of a predetermined time interval following the initiation of ther operation of said time-keeping mechanism, saidg'o time-keeping mechanism comprising a weight adapted to rise and fall relatively to-said'st'andard, means controlling the falling rate of said weight, a slide on Vthe standard adapted to be engaged and moved upwardly by the cup when the latter is manipulated into its position around the agitator, a weight lifter carried by the slide and adapted to engage the'weight whenthe slide and Weight are in lowered positions, and means for releasing the weight from theweight lifter, is() to initiate the operation of the time-keeping mechanism, when the cup hasbeen manipulated into position around the agitator.

9. A drink mixer comprising a standard,` a mo-Y tor carried by the standard, an agitator driven T35 by the motor and supported from above, a cup adapted tobe manuaily manipulated into a position around the agitator, cup supporting devices carried by the standard arranged station-V arily to hold the cup in its position around theol() agitator, time-keeping mechanism disposed withnipulated into its position around the agitator,50 Y

a weight lifter carried by the slide and arranged` to engage the Weight when the slide and Weight are in lowered positions, means for releasing the weight from its lifter when said slide has been moved to an elevated position by means of thea-T55 cup, circuit controlling devices actuated by the weight arranged and adapted to open the motor circuit at a predetermined point in the descentV A of said weight, and means for varying the point in the descent of said weight at which such lastig() '.entioned circuit controlling devices are ac'- tuated. Y f

10. A drink mixer comprising a stationary support, a motor stationariiy carried by the support, an agitator driven bythe motor and dependingl therefrom, a container adapted for manual ma-V nipulation into position around the agitator, supporting'means on the standard whereby saidcontainer is engaged andstationarily carried on the Asupport andeheld against vertical movement 'rela-U70 tive to theagitator throughout the operationY of the motor and ,its agitator, means closing the motor circuit when the container is thus stationarily supported around the agitator, time-keepently of the container and motor, arranged and adapted to open the motor circuit at the end of a predetermined time interval following initiation of the operation of said time-keeping mechanisrn, and devices, automatically actuated upon placement of the cup into its position around the agitator, arranged and adapted to initiate the operation of the said time-keeping mechanism.

11. A drink mixer comprising a standard, an electric motor mounted on the standard, an agitator driven by and depending from the motor, means on the standard for retaining a cup around the agitator when manipulated into position around the agitator, circuit controlling devices arranged to close the motor circuit when the cup has been manipulated into the aforesaid position around the agitator, time-keeping mechanism, carried by the standard and operating independently of the motor speed, arranged and adapted to open the motor circuit at the end of a predetermined time interval after the operation of said time-keeping mechanism has been initiated, and a member engaged by the cup, While the cup is being manipulated into the aforesaid position around the agitator, for storing energy in said time-keeping mechanism and for initiating the operation of said time-keeping mechanism When the cup has been placed in its aforesaid position around the agitator.

WILLIAM LUXMORE. 

